China National Standards

China established GB Standards List


  •  China "established" GB Standards List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 20139.2-2017 Electrical insulation systems—Thermal evaluation of modifications to an established electrical insulation system(EIS)—Part 2:Form-wound EIS
    电气绝缘系统 已确定等级的电气绝缘系统(EIS)组分调整的热评定 第2部分:成型绕组EIS
    China National Standards
    established

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    GB/T 20139.1-2016 Electrical insulation systems—Thermal evaluation of modifications to an established electrical insulation system(EIS)—Part 1: Wire-wound winding EIS
    电气绝缘系统 已确定等级的电气绝缘系统(EIS)组分调整的热评定 第1部分:散绕绕组EIS
    China National Standards
    established

    English PDF
    GB/T 20139-2006 Electrical insulation systems - Thermal evaluation of modifications to an established wire-wound EIS
    电气绝缘结构-对已确定等级的散绕绕组绝缘结构进行组分调整的热评定方法
    China National Standards
    established

    English PDF
    GB/T 7623-1987 Automatic answering equipment and/or parallel automatic calling equipment on the general switched telephone network, including procedures for bling of echo control devices for both manually and automatically established calls
    在电话自动交换网上的自动应答设备和(或)并行自动呼叫设备, 包括人工和自动建立呼叫时使回波控制装置停止工作的规程
    China National Standards
    established

    English PDF

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